How to Use Stock Screens

There are over 9000 publicly traded stocks. Noexamine more closely, so if you don't have a lot
one can possibly know even half of these orof time to spend, 30 or less is about all you can
have time to look at each one. A stock screen ishandle on a weekend.
simply a filtering method to allow an investor toI like to run screens for several important criteria
use software to scan all the available public stocksat once. I don't want any low-priced, low-cap, or
and find those with certain criteria. Probably thethinly traded stocks, meaning low daily volume; I
best examples of searches are high dividendalso like to avoid companies with very much debt
stocks, stocks that are cheap relative to earnings,at all, above 10% of equity is too much for me.
growth, or book value, stocks that are up theOnce I add these four criteria in my screen, I'm
most over a year, and stocks with no debt. Yousuddenly left with only about 600-750 companies
can also search for stocks to short or avoid.out of the original database of 9500 or so, and
When you start sifting stocks, a good screenerthese are usually the only stocks I would consider
will show you the number of companies thatholding long.
meet each filter that you invoke. Let's say youFrom this subset of all stocks, I want to pick
ask for stocks above $5.00 per share, mythose best for current investment, which will
screener tells me that I now have roughly 5000involve looking at more criteria, such as recent
that match this. I then add market capitalizationsperformance, revenue growth, earnings growth,
above 200 million; I find that 4000 meet this filter,and more fundamentals factors. When I get my
and when added to the first one, I now have justfinal list of say, 25 stocks, I then look at stock
2500 candidates. In more risky markets, youcharts, or technical analysis, to find those best
don't want to own the smallest companies, as thesuited for immediate investment or trading.
risk of bankruptcy for these is too great.Whatever your investment strategy or bias, a
A good screener will also allow you to only returnscreener will let you apply your own selection
stocks from an index, such as the S&P500,criteria and values to meet. The big sites all
or even a sector, such as energy or financials.provide screeners: Yahoo has a basic one,
Some also add relative performance criteria suchReuters has an even better one. Usually your
as top 10% in its industry or top 20% of theown broker will have a good one as well,
entire market.especially for active traders. Simply find one you
When you run screens, you need to get thelike and learn how to use it well, you will be
number of eventual matches down to ascreening stocks like a pro, and you may be
reasonable number, say less than 100. Your finalsaved from investing in the wrong companies.
screen will be a list of stocks you want to